2.7 swap

[78F350]

It has been done, but it's not a direct swap engine for engine.
Keep everything from the 2.5 in case you decide to use it on the 2.7.

The biggest differences will be in the computer/wiring harness and the intake. The harness from a 2.7L engine does not have the same connector for the computer as the 2.5L and the two can not just be interchanged without doing some modifications.

The throttle on the 2.7L engines is electronic and the 2.5L engines uses a physical throttle cable. The 2.7L engines have a 'resonance flapper' on the intake to improve airflow across the RPM range. In 2002 the fuel system changed and no longer used a vacuum controlled fuel pressure regulator on the fuel rail.

Look at some of these posts. 'Chi-town' and 'truegearhead' have done similar swaps to what you want to do.:
http://986forum.com/forums/performance-technical-chat/76434-1999-porsche-boxster-engine-swap-questions.html
http://986forum.com/forums/performance-technical-chat/75535-2-7-swap-2-5-blown-motor.html

[Dllrd23]

Originally Posted by 78F350

It has been done, but it's not a direct swap engine for engine.
Keep everything from the 2.5 in case you decide to use it on the 2.7.

The biggest differences will be in the computer/wiring harness and the intake. The harness from a 2.7L engine does not have the same connector for the computer as the 2.5L and the two can not just be interchanged without doing some modifications.

The throttle on the 2.7L engines is electronic and the 2.5L engines uses a physical throttle cable. The 2.7L engines have a 'resonance flapper' on the intake to improve airflow across the RPM range. In 2002 the fuel system changed and no longer used a vacuum controlled fuel pressure regulator on the fuel rail.

Look at some of these posts. 'Chi-town' and 'truegearhead' have done similar swaps to what you want to do.:
http://986forum.com/forums/performance-technical-chat/76434-1999-porsche-boxster-engine-swap-questions.html
http://986forum.com/forums/performance-technical-chat/75535-2-7-swap-2-5-blown-motor.html

Deal included DME for the 2.7, theft module, key and cylinder. I was just going to use the 2.7 DME. Looks like I’ll need a pedal though. I scanned through the thread you sent thanks. I’ll more closely read it when I have some car time tonight.

[Dllrd23]

Made the deal on the 2.7. Then I realized that engine is a fly by wire (no throttle cable) and a return less fuel system. Good news is the seller threw in the entire fuel system tank and all. Here is what I have from the donor car 2002 Boxster
2.7 l engine with harness
Auto trans
Complete fuel system
DME
Keys
Cylinder
Theft module

The receiving car 1999 Boxster
2.5l engine with harness
5-SPEED transmission

I would like to keep it as a 5-speed so that I would not have to change over cluster, linkages etc but not sure which module would work.

Looking for most economical solution